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MSD crank trigger, inductive or Hall effect?

Discussion in 'FAST Support Forum' started by wabco40, Aug 4, 2017.

  1. wabco40

    wabco40 New Member

    Joined:
    Nov 13, 2015
    Location:
    Perth, Australia
    Hi,

    Just a question on the advantages of converting an MSD crank trigger from inductive to Hall effect.

    I'm currently using XFI 2.0, MSD dizzy converted for cam signal and a MSD inductive crank trigger on a 427 sbc. I have read that the crank trigger can be converted to Hall effect by using a Holley sensor. What is the advantage of changing from inductive?
    Also does it use the same pins (2 and 4 on connector A) plus a switched 12v.

    Thanks
    Brad
     
  2. Fastmanefi

    Fastmanefi Active Member

    Joined:
    Jun 4, 2011
    Location:
    Sonora, CA
    Hall Effect sensors are not as sensitive to noise and produce the same signal at any rpm. They must be wired to the discrete input and the inductive input looped.
     
    wabco40 likes this.
  3. wabco40

    wabco40 New Member

    Joined:
    Nov 13, 2015
    Location:
    Perth, Australia
    Cool, thanks for the quick reply.
    Not sure if it's worth me to change or keep as inductive.

    Another question, what rpm do you suggest to go into and out of closed loop? The engine idles at 850 rpm and I have set the first few columns in the VE table to give a air/fuel ratio of about 14:1.
    Do you think I should leave idle in open loop or closed?
     
  4. Fastmanefi

    Fastmanefi Active Member

    Joined:
    Jun 4, 2011
    Location:
    Sonora, CA
    Sure. Leave it in CL if it runs we'll, but set a minimum temp.
     
  5. wabco40

    wabco40 New Member

    Joined:
    Nov 13, 2015
    Location:
    Perth, Australia
    Thanks
     

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